Welder



FIG. 1 is a perspective view of a welder embodying the ornamental design of the present invention;

FIG. 2 is front view of the welder; and,

FIG. 3 is a head-on view of a control panel of the welder.

The broken lines in FIGS. 1-3 are for illustrative purposes only and form no part of the claimed design. More specifically, dashed broken lines define unclaimed features. Two horizontal dot-dash broken lines, drawn with heavier weight than the dashed broken lines, located respectively at the top and bottom edges of the control panel, define boundaries of the claimed design. 

The ornamental design for a welder, as shown and described. 